#include<iostream>
using namespace std;
class Time {
public:
	Time() {
		hour = 0;
		minute = 0;
		sec = 0;
	}
	void set_time();
	void show_time();
private:
	int hour;
	int minute;
	int sec;
};

void Time::set_time() {
	cin >> hour;
	cin >> minute;
	cin >> sec;
}

void Time::show_time() {
	cout << hour << ":" << minute << ":" << sec << endl;
}

int main() {
	Time t1;
	t1.show_time();
	Time t2;
	t2.set_time();
	t2.show_time();
	system("pause");
	return 0;
}